Electrical condenser



Dec. 26, 1922.

e. FussEL ET AL. ELEcTRmAL CONDENSER.

Fu-zo Dec. 27, 1918- Fig.3.

and HERMAN SCH/mu) Patented Dec. 26, 1922.

. UNITED STATES ELECTRICAL CON DEN SER.

Application filed December tentate and coming citizens of the United States, residing in Brookyln, in the county of Kings and State of New York, have invented cera specification.

ur invention relates to an improvement in electrical condensers;'

particularly con- 0 and the eflidenser is maintained and armature of the magneto; this to permit further use of same.

he above and other objects and advantages of our invention will be apparent from the following description taken in connec- 27, 1918. Serial No. 268,551.

On the drawings,

Figure lis a longitudinal section through a condenser made according to our invention;

' Figure 2 is a front view showing the same in a cup-shaped casing, which enables it to be mounted on the armature of a magneto;

Figure 3 is a section through such a' casing taken on the line 3-3 of Figure 2, showing the condenser in side elevation;

Figr e 4 s ows our condenser applied to or a magneto and the manner generating coil and the conier;

view showing the manner in which a condenser of this type is preferably built up to be most conveniently'handled are needed; and a detail view showing the shape of the electric charge receiving elements and the manner in which they are assembled.

he same numerals identify the same parts throughout. 1

The body of the condenser is indicated by e numeral glue, to make them stick together over their entire extent of surface.

As usual we one set indicated by the numeral 3 and the other set by the numeral 4; the former set being shown in Figure l as being joined together at the top of the condenser and engaging the adjacent clip 2, which makes a common terminal for the elements 3;

her set 4 is shown as joined together at the bottom, and being in electrical connection with the other clip 2. The dielectric bers are indicated at 5. V e may give or outline;- such as that indicated in Figures 2 and 6; and to facilitate uniting the elements 3 4 we provide these elements with tabs or pro- " is made tight it jections6f- At each end of the condenser, half of the tabs of each set are bent forward and laid fiat against one face of the condenser; while the other half are bent the opposite way and laid fiat against the other face of the condenser; beneath the clips 2; whereby undue thickness of these projections beneath the clips 2 at each end is avoided, and the size of the condenser reduced. We illustrate the clip 2 which engages the projections 6 of the elements 4 as being secured in place by two rivets-7 which. pass through holes in the elements 4, indicated in Figure 6, and placed near projections 6. For the other clip 2 we provide a similar rivet, locating it near the ends of th arms of the clip; and at a slight distance from it, we make an opening throng the condenser for a retaining screw 8, which has the function of securing the condenser to the support upon which the condenser is to be mounted. Both this rivet 7 and the screw 8 will be located close to the tabs 6 of the elements 3; therefore the retaining screw 8 and the adjacent rivet .7 may have electrical connection with the elements 3. Likewise the rivets 7 of the other clip 2 may have contact with the elements l, because, as above stated, these rivets and the screw-are in proximity to the tabs 6 of these elements.

.There will be a sufficient area or surface be tween the screw 8 and its associated rivet 7 and the opposite ends of the elements 3; and between the, other two rivets and the opposite ends of the elements 4 to give the required effect. The rivets 7 which make con tact with the elements 4; are prevented from making contact with the elements 3 by notches 9 in the adjacent ends of the ele ments 3 and similar notches in the ends of the elements 4: prevent contact between these elements and the See Figure 6.

Ordinarily the support for the condenser will be a casing or housingindicated by the numeral 10 in Figures 2, 3 and 4, and adapted to be secured to the armature of an ignition magneto. This casing and the condenser therein will rotate with the armature; and when the screw 8 will anchor the condenser inthe housing 1.0 so that any jarring or vibration will beprevented. In practice, the

housing 10 may be a brass or other metallic casting.

The casing 10 as indicated in Figure 1 will be cylindrical and it will be cup-shaped; with an inside configuration corresponding with the outline of the condenser which it is to receive. We of course make the condenser fit the inside of the housing 10 as closely as possible; but if thereis any space between the sides of the condenser and housing,-it may be filled with pieces of cardboard or the like until the condenser is packed to the required degree. The housing 10 will other rivet 7 and screw 8.

the clip 2 at the adjacent end of the body 1,

will all be joined to ground through the screw 8. This screw being very strong, any likelihood of the ground connection 0 condenser ever becoming broken is avoided;

and, as jarringand vibration are likewise prevented, there is no liability of the condenser ever becoming disconnected or any of the elementsbecoming worn or short circuited; sothat the maximum'efiiciency and life are obtained.

As indicated in Figure 4, the armature to which the housing 10 is applied will consist of a pair ofpole P1866511 aflixed to a plate 12 at one end and to the housing 10 at the other. In an ordinary :magneto, this armature willbe of the usual shut or H-shaped type, with the pole pieces 11 connected by a metallic core, on which the generating coils are wound. The sides of the housing 10 may be made thicker, as indicated at 15 in Figure 2, so as to provide seg ment-shaped portions against which the adjacent ends of the poles 11 will fit; and these portions may be provided with openings 16, to receive fastening elements to hold the armature together;

securing the parts 10, 11 and 12 in a single fthei e-wound these fastening elements compact structure. The plate 12 may carry a spindle 13 to form one end of the armature shaft, and the casing 10 may carry a similar spindle 14 to' make the opposite end of the armature shaft, as will be understood.

The clip 2 through which is to be passed the screw 8 is shownasprovided with a projection 17 which is cut out therefrom and bent so as to provide a-binding-device. On the armature indicated at,'18, and one terminal thereof will be connected to this binding device 17 the projection 17 being bent around the same and made to grip it tightly.- the other end of terminal of the winding 18 will be led'out through the spindle .13, which will be hollow, to the contact points of the interrupter or timer. By this arrangement the ground terminal ofthe armature is madefvery accessible, and in case As'usual the generating'winding is of accident the. entire armature does not have to beunwound 'in order to reach the rounded terminal, as when this terminal is donnected toflthe core. extending between the same position as the. projection 17. This such a manner that it to .he timer contacts and the generating winding 18. In' order to separate this clip 2 from the bottom of the housing 10 we place insulation 20 in the housing against the bottom and the side of the same, so thatthis clip will be in contact with the insulation 20. through the clip which joins them is avoided. the winding 18 may be used primary of a high tension magneto with the same. In either case fashion; and the benefits of our invention flow not only from the structure and the arrangement of the condenser itself, but also the manner in which the winding 18 is combined with same.

In Figures 1 and 2 4. they appear in approximately the size they are actually given in practice. However, we may make the n practice when the magneto needs repairing it is only necessary to take outthe armature and remove the housing 10. After that the condenser can be taken out merely by turning back the screw condenser and armature given the attention they require.

In Figure 5 we show a method of constructing the condenser by placing between the elements '3 and 4 sheets of paper for the believe to be new and 8 and both the most part, with a small number of sheets of mica. The .two sets of electrical receiving elements are indicated by the numbers 21 and 22 and and tested singly when'one of the sheets of insulation ecomes punctured. In other words, the mica sheets mark-so many planes of cleavage body of hus the number of elements and sheets of dielectric which-must be removed to replace the punctured dielectric members 18 reduced to a minimum, and the Work of repairing greatly simplified.

our invention what we and desire to secure and rotect as Letters Patent of the United tates is:

The combination of a support,a condenser carrier by the support, said condenser including charge-receiving elements with intervening members of dielectric material, a binding screw passing through the condenser aving described FUEGEL. SCHMID.

GOTTLOB HERMAN the condenser can be condenser 

